APA (7th ed.) Citation

Boyd, M. F. (1940). Preventive medicine (6th ed., rev.). W.B. Saunders company.

Chicago Style (17th ed.) Citation

Boyd, Mark F. Preventive Medicine. 6th ed., rev. Philadelphia London: W.B. Saunders company, 1940.

MLA (9th ed.) Citation

Boyd, Mark F. Preventive Medicine. 6th ed., rev. W.B. Saunders company, 1940.